Sand core lifter

Abstract

The utility model discloses a sand core lifter. The sand core lifter comprises a rack, a transmission assembly, a first driving motor, a guide assembly, a lifting frame assembly and a roller way assembly, the transmission assembly is arranged in the machine frame and is in transmission connection with the first driving motor, the guide assembly is arranged on the machine frame, the lifting frame assembly is in transmission connection with the transmission assembly and is in sliding connection with the guide assembly, the roller way assembly is arranged on the lifting frame assembly, the roller way assembly comprises a plurality of roller shafts arranged in parallel, and the roller shafts are arranged on the roller way assembly. The second driving motor is in transmission connection with the roller shaft; the sand core lifter has the characteristics of high safety, stable operation, high efficiency, extremely low sand core damage rate and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the sand core conveying field in foundry processing, especially a sand core elevator. BACKGROUND

[0002] Sand core casting refers to using sand cores to form castings in the casting process. When casting workpieces, the sand is usually directly made into a casting model according to a specific shape, placed in a mold, and then a metal solution is injected into the mold for plasticity. After the metal solution cools, the sand core is removed to obtain a metal workpiece. Since the sand is low in cost, the cost of metal workpiece casting can be effectively controlled. Currently, sand core casting in the market is gradually replaced by automatic equipment, that is, the mold, sand core placement, and metal solution injection are completed by automatic equipment. However, before placing the sand core, the formed sand core needs to be transported from the sand core manufacturing area or warehouse to the workpiece processing area and lifted to the processing height of the mold. Currently, manual lifting or gantry crane lifting is used, which results in low and unstable processing efficiency, easy breakage, high temperature in the processing area, and personnel safety cannot be guaranteed. Therefore, a sand core elevator is needed to solve the above problems. SUMMARY

[0003] Therefore, a sand core elevator with high processing efficiency, stable operation, and guaranteed personnel safety is needed.

[0004] To achieve the above-mentioned purpose, the inventors provide a sand core elevator, which comprises a rack, a transmission assembly, a first driving motor, a guide assembly, a lifting frame assembly, and a roller assembly.

[0005] The transmission assembly is arranged in the rack and is in transmission connection with the first driving motor. The guide assembly is arranged on the rack. The lifting frame assembly is in transmission connection with the transmission assembly and is in sliding connection with the guide assembly. The roller assembly is arranged on the lifting frame assembly and comprises a plurality of parallel roller shafts and a second driving motor in transmission connection with the roller shafts.

[0006] As a preferred structure of the utility model, the transmission assembly comprises a horizontal transmission shaft and a vertical transmission shaft. The horizontal transmission shaft is horizontally arranged at the bottom of the rack. The vertical transmission shaft is vertically arranged at both sides of the rack. The two ends of the horizontal transmission shaft are in transmission connection with the bottom end portions of the vertical transmission shaft, respectively. The top end portions of the vertical transmission shaft are in rotation connection with the rack. The lifting frame assembly is in up-down transmission connection with the vertical transmission shaft.

[0007] As a preferred structure of the utility model, a shaft coupling and an angle reducer are arranged at the connection between the bottom end portions of the horizontal transmission shaft and the vertical transmission shaft. The first driving motor is in transmission connection with the angle reducer.

[0008] In a preferred embodiment of this invention, the longitudinal transmission shaft is a lead screw, a lead screw nut is fitted onto the lead screw, the lifting frame assembly is connected to the lead screw nut, and lead screw buffer devices are provided at both ends of the longitudinal transmission shaft.

[0009] As a preferred structure of this utility model, the lead screw buffer device includes lead screw protective sleeves sleeved at both ends of the lead screw, and buffer springs sleeved on the outside of the lead screw protective sleeves.

[0010] As a preferred structure of this utility model, the guide assembly includes guide columns vertically arranged on both sides of the frame, and a sliding mechanism is provided on the guide columns. The two sides of the lifting frame assembly are respectively fixedly connected to the sliding mechanism.

[0011] As a preferred structure of this utility model, the sliding mechanism includes a sliding bearing sleeve, a sliding bearing, a spacer, a dustproof seat, and a sealing ring;

[0012] The sliding bearing sleeve is fitted onto the guide post, the sealing ring is located at the top of the sliding bearing sleeve where it connects to the guide post, the dustproof seat is located at the bottom of the sliding bearing sleeve, the sliding bearing and the spacer are located inside the sliding bearing sleeve, and the sliding bearing is located above and below the spacer.

[0013] As a preferred structure of this utility model, the lifting frame assembly includes a lifting frame body, with connecting seats on both sides of the lifting frame body. The lifting frame body is connected to the transmission assembly and the guide assembly through the connecting seats. The front end and / or rear end of the lifting frame body are respectively provided with blocking devices. The blocking device includes a blocking cylinder and a rotating finger, and the rotating finger is drivenly connected to the blocking cylinder.

[0014] As a preferred structure of this utility model, it also includes a tray, which is disposed on the roller shaft, and a sand core clamp is fixedly disposed on the tray.

[0015] As a preferred structure of this utility model, it also includes a grating assembly, which is fixedly installed on the frame at the feeding end and / or unloading section of the sand core.

[0016] Unlike existing technologies, the above-mentioned technical solution achieves the following beneficial effects: This sand core lifting machine effectively realizes the vertical lifting operation of sand cores by setting up a frame, transmission components, a first drive motor, a guide component, a lifting frame component, and a roller conveyor component. After being lifted to the correct position, the roller conveyor component can automatically transfer materials for loading and unloading, effectively connecting with other conveyors and processing equipment. The entire equipment operates fully automatically, reducing the need for manual intervention and effectively improving the safety of workers. It also features stable overall operation, high efficiency, and an extremely low sand core damage rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the sand core lifting machine as described in the specific implementation method;

[0018] Figure 2 This is a schematic diagram of the roller conveyor assembly structure described in a specific embodiment;

[0019] Figure 3 This is a schematic diagram of the lifting frame assembly structure described in a specific embodiment;

[0020] Figure 4 This is a schematic diagram of the transmission assembly structure described in a specific embodiment;

[0021] Figure 5 This is a schematic diagram of the longitudinal transmission shaft structure described in a specific embodiment;

[0022] Figure 6 This is a schematic diagram of the guide component structure for a specific implementation.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Frame; 2. Transmission assembly; 201. Transverse transmission shaft; 202. Longitudinal transmission shaft; 203. Lead screw; 204. Lead screw nut; 205. Coupling; 206. Angle reducer; 207. Lead screw protective sleeve; 208. Buffer spring; 301. First drive motor; 4. Guide assembly; 401. Guide column; 402. Sliding bearing sleeve; 403. Sliding bearing; 404. Spacer; 405. Dustproof seat; 406. Sealing ring; 5. Lifting frame assembly; 501. Lifting frame body; 502. Connecting seat; 503. Blocking device; 5031. Blocking cylinder; 5032. Rotating finger; 6. Roller assembly; 601. Roller shaft; 602. Second drive motor; 701. Tray; 702. Sand core clamp; 703. Sand core; 801. Grating assembly. Detailed Implementation

[0025] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0026] like Figures 1 to 3 As shown, this embodiment provides a sand core lifting machine, including: a frame 1, a transmission assembly 2, a first drive motor 301, a guide assembly 4, a lifting frame assembly 5, and a roller conveyor assembly 6;

[0027] The transmission assembly 2 is located inside the frame 1 and is connected to the first drive motor 301. The guide assembly 4 is located on the frame 1. The lifting frame assembly 5 is connected to the transmission assembly 2 and is slidably connected to the guide assembly 4. The roller conveyor assembly 6 is located on the lifting frame assembly 5. The roller conveyor assembly 6 includes several parallel rollers 601 and a second drive motor 602 connected to the rollers 601. In the specific implementation of this embodiment, the first drive motor 301 and the second drive motor 602 can be servo motors. When it is necessary to feed sand cores, the lifting frame assembly 5 is driven by the transmission assembly 2 to descend to the lowest position or to the height required for feeding. The tray 701 containing the sand cores is placed on the roller conveyor. Then, the transmission assembly 2 lifts or lowers the lifting frame assembly 5. Under the limit of the guide assembly 4, the lifting frame assembly 5 achieves stable lifting or lowering. When it is lifted or lowered to the height required for unloading, the second drive motor 602 drives the roller shaft 601 to convey the tray 701 containing the sand cores on the roller conveyor to the next process, thereby completing the lifting and lowering operation of the sand cores from the feeding height to the unloading height. The whole process is stable and fully automated, with high efficiency. Under stable operation, it effectively ensures that the sand cores will not be tilted or bumped, and the sand core damage rate is extremely low.

[0028] like Figures 3 to 5 As shown, in this embodiment, the transmission assembly 2 includes a transverse transmission shaft 201 and a longitudinal transmission shaft 202. The transverse transmission shaft 201 is horizontally disposed at the bottom of the frame 1, and the longitudinal transmission shaft 202 is vertically disposed on both sides of the frame 1. The two ends of the transverse transmission shaft 201 are respectively connected to the bottom end of the longitudinal transmission shaft 202, and the top end of the longitudinal transmission shaft 202 is rotatably connected to the frame 1. The lifting frame assembly 5 is vertically connected to the longitudinal transmission shaft 202. In the specific implementation of this embodiment, a coupling 205 and a rotary reducer 206 are provided at the connection between the bottom end of the transverse transmission shaft 201 and the longitudinal transmission shaft 202. The first drive motor 301 is connected to the rotary reducer 206. The longitudinal transmission shaft 202 is a lead screw 203, and a lead screw nut 204 is sleeved on the lead screw 203. The lifting frame assembly 5 is connected to the lead screw nut 204, and lead screw buffer devices are provided at both ends of the longitudinal transmission shaft 202. That is, the first drive motor 301 drives the transverse transmission shaft 201 to rotate, which drives the longitudinal lead screws on both sides of the frame 1 to rotate. The lead screw drives the lead screw nut 204 to move up and down along the lead screw 203, thereby realizing the up and down lifting operation of the lifting frame assembly 5.

[0029] In the above embodiments, such as Figure 5 As shown, the lead screw buffer device includes lead screw protective sleeves 207 sleeved at both ends of the lead screw, and buffer springs 208 sleeved on the outside of the lead screw protective sleeves 207. By setting the lead screw buffer device, the first drive motor 301 can be effectively prevented from overloading and exceeding the lead screw's travel range, thus avoiding damage to the lead screw or lead screw nut 204, as well as the sand core 703.

[0030] like Figures 4 to 6 As shown, the guide assembly 4 includes guide columns 401 vertically arranged on both sides of the frame 1. A sliding mechanism is provided on the guide columns 401, and both sides of the lifting frame assembly 5 are fixedly connected to the sliding mechanism. In this embodiment, the guide columns 401 provide effective support for the stable operation of the lifting frame assembly 5. Specifically, the sliding mechanism includes a sliding bearing sleeve 402, a sliding bearing 403, a spacer 404, a dustproof seat 405, and a sealing ring 406. The sliding bearing sleeve 402 is fitted onto the guide column 401, the sealing ring 406 is located at the connection between the top of the sliding bearing sleeve 402 and the guide column 401, the dustproof seat 405 is located at the bottom of the sliding bearing sleeve 402, and the sliding bearing 403 and spacer 404 are located inside the sliding bearing sleeve 402. Sliding bearings 403 are respectively located above and below the spacer 404.

[0031] like Figure 4 and Figure 5 As shown, the lifting frame assembly 5 includes a lifting frame body 501, with connecting seats 502 on both sides of the lifting frame body 501. The lifting frame body 501 is connected to the transmission assembly 2 and the guide assembly 4 through the connecting seats 502. The front end and / or rear end of the lifting frame body 501 are respectively provided with blocking devices 503. The blocking device 503 includes a blocking cylinder 5031 and a rotating finger 5032. The rotating finger 5032 is drivenly connected to the blocking cylinder 5031.

[0032] In some embodiments, such as Figure 1 As shown, in order to facilitate the fixing and transportation of sand core 703, in this embodiment, the sand core lifting machine also includes a tray 701, which is mounted on the roller 601, and a sand core clamp 702 is fixedly mounted on the tray 701. When it is necessary to lift the sand core, the sand core is clamped and fixed by the tray 701 and the sand core clamp 702 mounted on the tray 701, so as to prevent the sand core 703 from tilting to the side during the conveying and lifting process, and to facilitate the picking and putting away of the sand core 703.

[0033] Furthermore, in different embodiments, such as Figure 1 As shown, this sand core lifting machine also includes a grating assembly 801, which is fixedly installed on the frame 1 located at the sand core feeding end and / or unloading section. By setting the grating assembly 801, it is possible to detect in real time whether the components in the frame 1 exceed the working range of the frame 1, and to detect whether the sand core feeding or unloading is completed.

[0034] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.

Claims

1. A sand core lifter characterized by, The application relates to a sand core lifting device. The device comprises a rack, a transmission assembly, a first driving motor, a guide assembly, a lifting rack assembly and a roller assembly. The transmission assembly is arranged in the rack and is in transmission connection with the first driving motor, the guide assembly is arranged on the rack, the lifting rack assembly is in transmission connection with the transmission assembly, the lifting rack assembly is in sliding connection with the guide assembly, the roller assembly is arranged on the lifting rack assembly, and the roller assembly comprises a plurality of parallel roller shafts and a second driving motor in transmission connection with the roller shafts.

2. A core lifter according to claim 1, characterized in that: The transmission assembly comprises a horizontal transmission shaft arranged at the bottom of the rack and vertical transmission shafts arranged at the two sides of the rack, the two ends of the horizontal transmission shaft are in transmission connection with the bottom ends of the vertical transmission shafts, the top ends of the vertical transmission shafts are in rotation connection with the rack, and the lifting rack assembly is in up-down transmission connection with the vertical transmission shafts.

3. A core lifter according to claim 2, characterised in that: A shaft coupling and an angle reducer are arranged at the bottom end connection positions of the horizontal transmission shaft and the vertical transmission shaft, and the first driving motor is in transmission connection with the angle reducer.

4. The core lifter of claim 2, wherein: The vertical transmission shaft is a lead screw, a lead screw nut is arranged on the lead screw, the lifting rack assembly is connected with the lead screw nut, and a lead screw buffer device is arranged at the two ends of the vertical transmission shaft.

5. A core lifter according to claim 4, characterised in that: The lead screw buffer device comprises a lead screw protection sleeve arranged at the two ends of the lead screw and a buffer spring arranged outside the lead screw protection sleeve.

6. The core lifter of claim 1, wherein: The guide assembly comprises guide columns arranged vertically at the two sides of the rack, sliding mechanisms are arranged on the guide columns, and the two sides of the lifting rack assembly are fixedly connected with the sliding mechanisms.

7. A core lifter according to claim 6, characterised in that: The sliding mechanism comprises a sliding bearing sleeve, a sliding bearing, a spacer, a dustproof seat and a sealing ring. The sliding bearing sleeve is arranged on the guide column, the sealing ring is arranged at the top of the sliding bearing sleeve and is connected with the guide column, the dustproof seat is arranged at the bottom of the sliding bearing sleeve, the sliding bearing and the spacer are arranged in the sliding bearing sleeve, and the spacer is provided with the sliding bearing above and below.

8. The core lifter of claim 1, wherein: The lifting rack assembly comprises a lifting rack body, connecting seats are arranged at the two sides of the lifting rack body, the lifting rack body is connected with the transmission assembly and the guide assembly through the connecting seats, a blocking device is arranged at the front end and / or the rear end of the lifting rack body, the blocking device comprises a blocking cylinder and a rotating finger, and the rotating finger is in driving connection with the blocking cylinder.

9. A core lifter according to any one of claims 1 to 8, characterised in that: The device further comprises a tray, the tray is arranged on the roller shaft, and a sand core clamp is fixedly arranged on the tray.

10. A core lifter according to any one of claims 1 to 8, characterised in that: The device further comprises a grating assembly, the grating assembly is fixedly arranged on the rack at the sand core feeding end and / or the sand core discharging end.

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